Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669761 | Air filter having electrostatically active nonwoven fabric inliners and their use | Armin Greiner, Silke Frank | 2003-12-30 |
| 6488731 | Pleated filter made of a multi-layer filter medium | Felix Herberg, Jörg Stöckler | 2002-12-03 |
| 4336038 | Filter mat | Harald Hoffmann | 1982-06-22 |